53250209 has 2 divisors, whose sum is σ = 53250210. Its totient is φ = 53250208.

The previous prime is 53250199. The next prime is 53250247. The reversal of 53250209 is 90205235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 1697809 = 7180^2 + 1303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53250209 is a prime.

It is not a weakly prime, because it can be changed into another prime (53250259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26625104 + 26625105.

It is an arithmetic number, because the mean of its divisors is an integer number (26625105).

Almost surely, 2^53250209 is an apocalyptic number.

It is an amenable number.

53250209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53250209 is an equidigital number, since it uses as much as digits as its factorization.

53250209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 53250209 is about 7297.2740800932. The cubic root of 53250209 is about 376.2187523856.

The spelling of 53250209 in words is "fifty-three million, two hundred fifty thousand, two hundred nine".